panicpanic: kernel diagnostic assertion "((flags & PGO_LOCKED) != 0 && rw_lock_held(uobj->vmobjlock)) || (flags & PGO_LOCKED) == 0" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_vnode.c", line 928 Starting stack trace... panic(ffffffff825a985f) at panic+0x16b sys/kern/subr_prf.c:229 __assert(ffffffff8261df93,ffffffff825a2761,3a0,ffffffff8258ad58) at __assert+0x25 sys/kern/subr_prf.c:157 uvn_get(fffffd806e3f19c0,2a000,ffff8000296321c0,ffff800029632034,3,4,a320eecba00ca014,fffffd806e3f19c0) at uvn_get+0x4b6 sys/uvm/uvm_vnode.c:927 uvm_fault_lower_lookup(ffff800029632240,ffff800029632278,ffff8000296321c0) at uvm_fault_lower_lookup+0xf6 sys/uvm/uvm_fault.c:1129 uvm_fault_lower(ffff800029632240,ffff800029632278,ffff8000296321c0,0) at uvm_fault_lower+0x5f sys/uvm/uvm_fault.c:1228 uvm_fault(fffffd8073f24008,b5b154ab000,0,4) at uvm_fault+0x238 upageflttrap(ffff8000296323b0,b5b154ab660) at upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 usertrap(ffff8000296323b0) at usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffdee00, count: 248 End of stack trace.